return errors in cli handlers (#146)

* return errors in cli handlers

* return the wrapped errors

src/cli/backup/backup.go

@@ -22,7 +22,8 @@ func AddCommands(parent *cobra.Command) {
 // `corso backup [<subcommand>] [<flag>...]`
 var backupCmd = &cobra.Command{
 	Use:   "backup",
-	Short: "Backup a M365 service",
+	Short: "Backup your service data",
+	Long:  `Backup the data stored in one of your M365 services.`,
 	Run:   handleBackupCmd,
 	Args:  cobra.NoArgs,
 }
@@ -38,7 +39,7 @@ func handleBackupCmd(cmd *cobra.Command, args []string) {
 var createCommand = "create"
 var createCmd = &cobra.Command{
 	Use:   createCommand,
-	Short: "Backup M365 Exchange",
+	Short: "Backup an M365 Service",
 	Run:   handleCreateCmd,
 	Args:  cobra.NoArgs,
 }

src/cli/backup/exchange.go

@@ -3,6 +3,7 @@ package backup
 import (
 	"fmt"
 
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 
 	"github.com/alcionai/corso/cli/utils"
@@ -31,14 +32,13 @@ func addExchangeApp(parent *cobra.Command) *cobra.Command {
 // `corso backup create exchange [<flag>...]`
 var exchangeCreateCmd = &cobra.Command{
 	Use:   "exchange",
-	Short: "Start backing up Exchange data",
-	Long:  `Creates a new backup of your microsoft Exchange data.`,
-	Run:   createExchangeCmd,
+	Short: "Backup M365 Exchange",
+	RunE:  createExchangeCmd,
 	Args:  cobra.NoArgs,
 }
 
 // initializes a s3 repo.
-func createExchangeCmd(cmd *cobra.Command, args []string) {
+func createExchangeCmd(cmd *cobra.Command, args []string) error {
 	mv := utils.GetM365Vars()
 	fmt.Printf(
 		"Called - %s\n\t365TenantID:\t%s\n\t356Client:\t%s\n\tfound 356Secret:\t%v\n",
@@ -55,23 +55,24 @@ func createExchangeCmd(cmd *cobra.Command, args []string) {
 	// todo (rkeepers) - retrieve storage details from corso config
 	s, err := storage.NewStorage(storage.ProviderUnknown)
 	if err != nil {
-		utils.Fatalf("Failed to configure storage provider: %v", err)
+		return errors.Wrap(err, "Failed to configure storage provider")
 	}
 
 	r, err := repository.Connect(cmd.Context(), a, s)
 	if err != nil {
-		utils.Fatalf("Failed to connect to the %s repository: %v", s.Provider, err)
+		return errors.Wrapf(err, "Failed to connect to the %s repository", s.Provider)
 	}
 	defer utils.CloseRepo(cmd.Context(), r)
 
 	bo, err := r.NewBackup(cmd.Context(), []string{user})
 	if err != nil {
-		utils.Fatalf("Failed to initialize Exchange backup: %v", err)
+		return errors.Wrap(err, "Failed to initialize Exchange backup")
 	}
 
 	if err := bo.Run(cmd.Context()); err != nil {
-		utils.Fatalf("Failed to run Exchange backup: %v", err)
+		return errors.Wrap(err, "Failed to run Exchange backup")
 	}
 
 	fmt.Printf("Backed up Exchange in %s for user %s.\n", s.Provider, user)
+	return nil
 }

src/cli/repo/s3.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 
 	"github.com/alcionai/corso/cli/utils"
@@ -43,17 +44,16 @@ var s3InitCmd = &cobra.Command{
 	Use:   "s3",
 	Short: "Initialize a S3 repository",
 	Long:  `Bootstraps a new S3 repository and connects it to your m356 account.`,
-	Run:   initS3Cmd,
+	RunE:  initS3Cmd,
 	Args:  cobra.NoArgs,
 }
 
 // initializes a s3 repo.
-func initS3Cmd(cmd *cobra.Command, args []string) {
+func initS3Cmd(cmd *cobra.Command, args []string) error {
 	mv := utils.GetM365Vars()
 	s3Cfg, commonCfg, err := makeS3Config()
 	if err != nil {
-		fmt.Println(err)
-		os.Exit(1)
+		return err
 	}
 
 	fmt.Printf(
@@ -72,16 +72,17 @@ func initS3Cmd(cmd *cobra.Command, args []string) {
 	}
 	s, err := storage.NewStorage(storage.ProviderS3, s3Cfg, commonCfg)
 	if err != nil {
-		utils.Fatalf("Failed to configure storage provider: %v", err)
+		return errors.Wrap(err, "Failed to configure storage provider")
 	}
 
 	r, err := repository.Initialize(cmd.Context(), a, s)
 	if err != nil {
-		utils.Fatalf("Failed to initialize a new S3 repository: %v", err)
+		return errors.Wrap(err, "Failed to initialize a new S3 repository")
 	}
 	defer utils.CloseRepo(cmd.Context(), r)
 
 	fmt.Printf("Initialized a S3 repository within bucket %s.\n", s3Cfg.Bucket)
+	return nil
 }
 
 // `corso repo connect s3 [<flag>...]`
@@ -89,17 +90,16 @@ var s3ConnectCmd = &cobra.Command{
 	Use:   "s3",
 	Short: "Connect to a S3 repository",
 	Long:  `Ensures a connection to an existing S3 repository.`,
-	Run:   connectS3Cmd,
+	RunE:  connectS3Cmd,
 	Args:  cobra.NoArgs,
 }
 
 // connects to an existing s3 repo.
-func connectS3Cmd(cmd *cobra.Command, args []string) {
+func connectS3Cmd(cmd *cobra.Command, args []string) error {
 	mv := utils.GetM365Vars()
 	s3Cfg, commonCfg, err := makeS3Config()
 	if err != nil {
-		fmt.Println(err)
-		os.Exit(1)
+		return err
 	}
 
 	fmt.Printf(
@@ -118,16 +118,17 @@ func connectS3Cmd(cmd *cobra.Command, args []string) {
 	}
 	s, err := storage.NewStorage(storage.ProviderS3, s3Cfg, commonCfg)
 	if err != nil {
-		utils.Fatalf("Failed to configure storage provider: %v", err)
+		return errors.Wrap(err, "Failed to configure storage provider")
 	}
 
 	r, err := repository.Connect(cmd.Context(), a, s)
 	if err != nil {
-		utils.Fatalf("Failed to connect to the S3 repository: %v", err)
+		return errors.Wrap(err, "Failed to connect to the S3 repository")
 	}
 	defer utils.CloseRepo(cmd.Context(), r)
 
 	fmt.Printf("Connected to S3 bucket %s.\n", s3Cfg.Bucket)
+	return nil
 }
 
 // helper for aggregating aws connection details.

src/cli/utils/utils.go

@@ -44,9 +44,3 @@ func CloseRepo(ctx context.Context, r *repository.Repository) {
 		fmt.Print("Error closing repository:", err)
 	}
 }
-
-// Fatalf prints the message and then exits with os code 1.
-func Fatalf(format string, a ...any) {
-	fmt.Printf(format, a...)
-	os.Exit(1)
-}